Features 4mm torx diameter and a 2mm security hole. With a slight magnetic design, it is more convenient and practical for use. Ergonomically shaped plastic handle provides a comfortable grip. Precise tip ensures a secure fit. Useful for opening electronic devices, preferred by electricians and repair shops due to its versatility. Product Name: Screwdriver Material: Metal Shaft and Plastic Handle Tip Type: Security Torx (T20) Tip Hole Diameter: 2mm Torx Diameter: 4mm Shaft Diameter: 5mm Shaft Length: 100mm / 3.9 inch Total Length: 175mm / 6.9 inch Handle Size: 75mm x 20mm / 3 inch x 0.8 inch (L x D) Handle Color: Clear, Red Weight: 89g Package Contents: 20 x Screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3cm.