Bosch Mortar Knife Chisels SDS Plus Bulldog Xtreme Steels (Blunt Face Non Binding Forged Alloy Brick Facade Lime Grout Joint Tuckpointing Cleanout)

Bosch Bulldog™ Xtreme SDS-Plus Hammer Steel Mortar Knife Chisel Bits

The Bosch Bulldog™ Xtreme SDS-plus mortar knife chisel bits clear degraded mortar beds, joint lime grout, and exterior facade caulking during structural brick repointing and historic masonry restoration. Engineered with a specialized blunt flat-face nose forged from proprietary heat-treated alloy tool steel, these pneumatic chisels deliver percussive impact force straight into the mortar joint to pulverize hardened matrix compounds without chipping, spalling, or scarring adjacent brick edges. Outfitted with an anti-binding straight tracking profile that glides cleanly down horizontal and vertical joints, deep operational reach, and a universal slotted SDS-plus drive shank, they equip commercial tuckpointers, bricklayers, and facade preservation contractors with high-precision joint cleanout velocity on rotary hammers operating in hammer-only mode.

Best Used For:

• Historic Brick Tuckpointing and Mortar Raking: Pulverizing soft lime grouts, weathered Portland mortar, and degraded joint beds without splitting vintage clay bricks or decorative architectural stone borders.
• Vertical Head Joint and Bed Joint Preparation: Clearing masonry seams down to a uniform, clean depth to ensure code-compliant bond strength for new tuckpointing mortar.
• Facade Restoration and Plaster Removal: Chiseling away damaged mortar joints, deteriorated masonry render, and failed exterior sealants around window lintels and masonry columns.

Key Performance & Safety Features

• Blunt-Tip Safety Geometry: Flat-face striking nose crushes brittle mortar under direct percussion while eliminating sharp chisel edges that could split delicate brick faces.
• Optimized Joint Profile: Sized to seat fully inside common brick joints for rapid, clean material clearance without dynamic binding or wedging.
• Anti-Binding Tracking Edge: True straight-guiding edge design tracks smoothly down joint lines without snagging or drifting off-center during continuous hammer cycles.
• Proprietary Heat-Treated Alloy Steel: Multi-stage thermal hardening process produces superior tool core toughness, resisting shank fatigue and tip deformation.
• Deep Working Standoff Reach: Extended shaft length provides ample reach for deep joint penetrations while maintaining precise operator control.
• Universal SDS-Plus Connection: Compatible with all standard corded and cordless SDS-plus rotary hammers operating in dedicated chipping/hammer-only mode.

What's Included

• (1) Bosch Bulldog™ Xtreme SDS-Plus Hammer Steel Mortar Knife Chisel Bit in User-Selected Model & Size:
  • HS1400: 1/4" Width x 1/4" Thickness x 8" Overall Length SDS-Plus Mortar Knife Bit
  • HS1401: 3/8" Width x 3/8" Thickness x 8" Overall Length SDS-Plus Mortar Knife Bit
  • HS1402: 1/2" Width x 3/8" Thickness x 8" Overall Length SDS-Plus Mortar Knife Bit

Technical Specifications

Pro-Tip: Select the mortar knife width that leaves roughly 1/16-inch of clearance on either side of the joint; keeping the blunt blade centered in the channel lets forward percussive energy shatter the mortar core without nicking or scuffing the surrounding brick surfaces.