A heavy duty ten piece set of 3/8""D crows foot wrenches in a full range of sizes from 10mm to 19mm, for use with extension bar and ratchet. The wrenches are manufactured from chrome molybdenum with a black finish for strength and durability and are presented in a fitted case for safe storage. A quality set designed for professional automotive use. Sizes: 10, 11, 12, 13, 14, 15, 16, 17, 18 and 19mm. Specifically designed for use with 3/8""D extension. Manufactured from chrome molybdenum with black finish. Supplied in a blow mould storage case. Larger set also available. Please see Laser Part No. 4713 (1/2""D set).