LOGGERHEAD TOOLS Bionic Grip Wrench - Model .: BG8 Finish/Coating: Black-Oxide finish SIZE: 8" Fully adjustable with a one-handed squeeze. Efficient ratcheting by releasing, then re-gripping the object. Instantly grips pipes, fasteners and fittings from 1/2" to 13/16". Hardened, cold-rolled, steel-laminate construction. QS 9000 certified manufacturing.