VERANY 10 in 1 Multi Bicycle Repair Tools Outdoor Keychain Screwdriver Terrific tool for daily use and outdoor activities such as outdoor survival, camping, cycling and et Operation simple and easy to carry , durable metal material, great variety of practical Durable, lightweight, micro design, use as self-defense tool wearing on finger Multi-Tool includes:1)3mm Allen Screwdriver; 2) 4mm Allen Screwdriver; 3) 5mm Allen Screwdriver; Material: Metal, Size: 40 mm/1.57 inch