Sirui TY-LP40 Arca-Type Quick Release Plate Sirui TY-LP40 Arca-Type Quick Release Plate - Tightening Hex Key - Sirui 6 Year Warranty Construction: Forged Aluminum Mount Thread Size: 1/4"-20 Weight: 1.4oz / 40g Dimensions: 2.60 x 1.54 x 0.43" / 65 x 39 x 11mm