Profile: ZZ Top Oil Tools Co., Ltd. specializes in design, engineering, and manufacturing oil tools. Safety clamps are tools for handling flush joint pipes and drill collars. There are two models of safety clamps. Model WA-C safety clamps can accommodate pipes from 3 1/2" to 15 5/8" (88.9-396.9 mm) O.D. Model WA-T Safety clamps can accommodate pipes from 1 1/8" to 4 1/2" (28.6-114.3 mm) O.D. Casing slips can accommodate casing from 6 5/8"to 30"(168.3~762 mm) O.D. Slip type elevator is used for holding and hoisting tools, for handling drill pipe, casing, and tubing in oil and gas field. Slip type elevator is used to fit integral joint tubing, non-coupled casing, and other tubular goods.