BLACKHAWK! - 70SW22BK - Full Band Magazine Tube Swivel Set - .645-.660 Tube Diameter - 1" Rifle Swvl BlackHawk FULL MAGAZINE TUBE SWIVEL SET 70SW22BK US Distributor for BlackHawk Swivels. Full magazine tube diameters .645-.660 for Winchester and Marlin centerfire lever actions Brand: BHO Description: QD-115 CF 1" RIFLE SWVL Color: Black