The Weller Xcelite T9911N is a high-quality 11/32″ (≈ 8.7 mm) solid steel hex nut driver with an overall length of approx. 115.9 mm (4 9/16″) and a blade length of approx. 92.1 mm (3 5/8″), which is ideal for precise and powerful tightening of nuts in electronics and precision mechanics applications.