Features
- Large shoulder to prevent over‑depth drilling
- Designed for anchor installation and post‑tensioned concrete where depth control is required
- Available in multiple diameters and working lengths to match common anchor sizes
- Compatible with SDS‑Plus hammer shanks
Specifications
| Sku | DWA5491 |
| Product Type | Stop bit |
| Shank Style | SDS‑Plus |
| Bit Type | Masonry |
| Bit Material | High speed steel |
| Diameter | 3/8 in |
| Working Length (Cut Length) | 25/32 in |
| Flute Length | 0.78125 in |
| Overall Length | 3.7813 in |
| Package Quantity | 1 each |
| Case Quantity | 1 each |
| Typical Application | Drop‑in anchors / anchor installation |
| Warranty | Not specified |
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SDS Plus stop bit with a large shoulder to limit drilling depth. Intended for making controlled holes for anchor installation, including use in post-tensioned concrete where preventing over‑drilling is important. Designed for use with SDS‑Plus hammer systems.
Project Ideas
Business
Post‑Tension Safe Anchoring Service
Offer a niche service for drilling and anchoring in post‑tensioned slabs and high‑risk concrete. Pair scanning/mark‑out with SDS‑Plus stop bits to guarantee depth compliance for drop‑ins and screw anchors. Target property managers, multifamily build‑outs, and MEP trades needing compliant attachments.
Temporary Event Anchoring Kits
Rent and install kits for trade shows and pop‑ups: stop bits matched to common drop‑ins, vacuum, depth check gauges, threaded eye‑bolts, and removable base plates. Provide templates for predictable hole patterns, fast install/removal, and minimal floor repair.
Retail Fixture Anchor Grids
Pre‑install flush anchor grids in concrete floors/walls for modular merchandising. The stop bit assures consistent hole depth so fixtures sit level and can be reconfigured without new drilling. Package includes layout, drilling, hardware, and as‑builts for store teams.
Contractor Training + QC
Run short courses teaching correct drilling depth, dust control, and anchor setting. Sell calibrated stop bits and depth verification tools, then offer on‑site QC audits that certify anchor holes meet spec—reducing failed inspections and warranty callbacks.
Precision Templates + Hardware Bundles
Design CNC‑cut drilling templates for pergola post bases, machine pads, handrails, and racking. Bundle templates with matching SDS‑Plus stop bits and anchor kits, ensuring installers hit the right hole location and depth the first time.
Creative
Modular Shop Wall Anchor Grid
Lay out a clean grid of 3/8 in drop‑in anchors on a CMU or poured concrete wall to mount interchangeable cleats, shelves, and jigs. The stop bit’s shoulder guarantees every hole matches the anchor spec, keeping anchors flush and avoiding blow‑outs so hardware seats perfectly and the wall looks tidy when fixtures move.
Removable Garage Floor Fixtures
Install flush drop‑in anchors in a concrete slab to bolt down a bike rack, vise stand, or small assembly bench when needed and remove it when space is tight. The stop bit ensures consistent embedment depth so expansion cones set reliably and the floor remains trip‑free when hardware is removed.
Floating Art and Acoustic Panels
Mount heavy art or acoustic panels on concrete/CMU using threaded standoffs into drop‑in anchors. The controlled drilling depth prevents over‑penetration and spalling, keeping edges clean for a premium finish with evenly spaced stand‑offs.
Balcony Shade/Light Tie‑Points
Create discreet stainless eye‑bolt tie‑points for shade sails or string lights in concrete balcony soffits or walls. The stop bit limits depth in post‑tensioned slabs and helps maintain precise embedment for reliable load performance. Always scan/locate tendons and rebar first.
Home Climbing/Hangboard Mount
Secure a hangboard or compact training frame to a concrete wall/header using drop‑ins or sleeve anchors. The bit’s large shoulder prevents over‑drilling, improving anchor holding power and making installation repeatable if you relocate the setup.