TufForce 1" Tube Mount, fit on scope,Gauge Shotgun barrel or Magazine Tubes-- Remington 870/1100 11-87 SP-10 Mossberg 500/835; Maverick 88, Winchetser 1300, MT-25T4 TufForce 1" Tube Mount, fit on scope,Gauge Shotgun barrel or Magazine Tubes-- Remington 870/1100 11-87 SP-10 Mossberg 500/835; Maverick 88, Winchetser 1300, MT-25T4 4 slots, 45mm /2" length and Can be Mounted at Any Angle Intend For Laser or Other Small Accessory Attached on scope tube, Also fit for shot gun Barrel or Mag. tube Precision Machined Out of Premium 6061 Aircraft Aluminum; Black Hard Anodized Finish