Wera Tools 05347180001 38Pc 1/4" (SAE) Drive Mini Bit-Ratchet, Bit Tip and Socket Set Mini Bit-Ratchet Drive Size " Overall Length 3". Plastic case sporting the Wera logo Forged steel body for greater strength, Easy-read marking. Socket Sizes: 3/16", 1/4", 5/16", 11/32", 3/8", 7/16", 1/2" Fractions (SAE) Thumb-wheel for fast action, 30 Piece bit set includes most popular styles Rapidaptor allows for use as extension or in power tools. (SAE)