The Edge Pro Apex and the drill stop collar
· Set Screw Shaft Collars Just slide the collar on a shaft and tighten the hex socket cup point set screw to secure Set screw is alloy steel except for the Type 303 stainless steel shaft collars which have 18 8 stainless steel set screws and Type 316 stainless steel shaft collars which have Type 316 stainless steel set screws