ㆍRound type steel core made from S2 material. ㆍDiamond coating to increase the friction up to 30% to save the laboring on tighten the scretis, and reduce cam-out forces to protect your both screws and tools. ㆍTwin-color handle made from PP+TPR to prevent corroded from oil & chemical. 編號 Item 規格 Spec 5447 SL3 x 75 mm Ө 5448 PH0 x 75mm ⊕ 5449 SL5 x 75mm Ө 5450 PH1 x 75mm ⊕ 5451 SL6 x 100mm Ө 5452 PH2 x 100mm ⊕ 5453 SR5 x 300mm Ө 5456 PH2 x 300 mm ⊕ Round type steel core made from S2 material. Diamond coating to increase the friction up to 30% to save the laboring on tightening the screws, and reduce cam-out forces to protect your both screws and tools. Twin-color handle, made from oil proved material. ial.