ITEM NAME:Clamp Quick Release Plate with 1/4-3/8 Screw Adapter for Ball Head Tripod #gib Store Home Promotion Hot Item Add to Fav.Large Clamp and QR Quick Release Plate Compatible for Monopod Tripod Ball Head. 3/8" Standard thread will fit on any standard tripod or head with 3/8" hole. New arrival. Quick release plate size: 60 x 38 x 10mm/2.36 x 1.49 x 0.39".