Heavy-duty, high-leverage, wrench and Delrin® blocks give form-fitted support of the frame for barrel removal and other customizing jobs. Insert Blocks fit on the front of the frame and are used only for barrel removal/installation and tightening or loosening the barrel to regulate sights.
SPECS:
Insert Blocks – Delrin, black. S&W K/L fits Smith & Wesson K and L frames. S&W N fits N frame. CSA/RSA fits all Colt SAA and clones, plus Ruger® Old/New Vaquero®, Blackhawk®, and large-frame old-model three-screw single action revolvers.
Catalog page 458, 485