Base screws are 6-48 X 1/4 long and ring screws are 6-40 X 5/8 long
leaving cases clean and ready to use
More than that
Includes an aluminum rod with swivel t-handle along with a brush
allowing for lateral adjustment using the rear windage screws while bore sighting
DAC GM20SG GunMaster Cleaning Kit 20 Gauge Shotgun/14 Pieces Black/Blue Components Base screws are 6-48 XThese Gunmaster cleaning kits are made specifically for 12 gauge, 20 gauge and 210 gauge shotguns. They include one 33" pull rod, one multi function handle, one bore brush, one wool mop, one slot tip, six screwdriver bits (2 phillips, 2 flat heads, 1 star, and 1 hex), and 25 cleaning patches. Multi function handle can be used with traditional rods, pull cords and also functions as a screwdriver handle. Contents store in the compact, custom case when