reducing strain compared to tightening by hand

Performance Specifications

Allows for Single or Double Leg Use

Fully charges battery in 30 minutes

Minimum tensile breaking strength of 5

NEW! 1/8" Aluminum Replacement Wheel for 640-4 & 640-5 Backer Rod Insertion Tools CORDLESS reducing strain compared to tightening1 8" wide (0. 08") x 2 1 2" diameter aluminum wheel NOTE: The 1 8" wheel is actually undersized at 0. 08" wide to fit in a 1 8" saw cut joint) Durable, Aluminum wheel for Backer Rod Insertion Tools: 640 4 Road Model or 640 5 Standard Model (sold separately) Excellent wear resistance when working on rough surfaces Quickly sets backer rod up to 1 deep in saw cut joints For setting rod deeper up to 2, use replacement wheel 640 G20. Additional sizes