Wood Screw Set includes front and rear wood screw swivel studs. Machine Screw Set contains a machine screw front swivel stud with locknut and rear wood screw for maximum strength with wooden stocks. Both include spacers. Purchase swivel set and screw set separately.
SPECS:
Steel, black, matte finish. Wood Screw Set - ½” front & ¾” rear screw. Machine Screw Set - 7⁄8" front machine screw & ¾” rear wood screw.
Catalog page 234