122 in 1 Precision Set contains 101 precision bits and 21 auxiliary tools including screwdriver handle, flexible shaft, extension rod, magnetizer, magnetic mat and spudgers. Designed for Pc maintenance, Ram upgrades, Ssd swaps, Pc assembly plus repairs of game consoles, drones, smartphones, tablets and other electronics with rare and specialty bits included. The ergonomic non-slip handle spins smoothly with 4.56-inch alloy-steel extension shaft for high hardness and bending resistance, plus spring-constructed flexible shaft flexing up to 180 degrees to reach deep screws. Dual-magnet design features magnetizer to boost bit magnetism and magnetic mat to organize screws, preventing loss or mix-ups. Bits forged from Cr-v steel and heat-treated to 60 Hrc deliver exceptional hardness, strength and deformation resistance with spare common sizes included. All components neatly labeled and organized in compact case for home, office or travel use. Weight: 1.28 pounds.