• Heat-treated alloy steel
• Supplied with adjustable carbide chip-breaker and carbide shim to protect the boring bar
• Accommodates standard positive rake triangular inserts
• Used for boring to square shoulder
• Can be used with open slot holders #1 and #2, as well as heavy duty holders #4, #41, #4D, #41D, #100, #104, #141

Boring Bar Size
Square: ⁵/₈"
Round: ³/₄"
Length: 8"

Minimum Bore Diameter: 1¹/₈"

Insert Size
I.C.: ³/₈"; thickness: ¹/₈"

Replacement Parts:
Adjustable Chipbreaker: CB-13
Chipbreaker Clamp Screw: SCR-1
Carbide Shim: SM-41
Carbide Shim Screw: SM-41SS