✅ Made of thickened high-strength 45# carbon steel, high hardness, wear-resistant and not easy to bend or deform under large pressing force ✅ Dual-purpose press & pull design for bearings, bushings and oil seals ✅ High-strength threaded rods with buffer gaskets for uniform stress ✅ Smooth CNC polished sleeves, no scratches on auto precision parts ✅ Hard plastic storage box, equipped with independent fixed slots, convenient handle and safety lock. Dust-proof, shock-resistant, easy for transportation and storage. ✅ Anti-rust oxidized surface, resistant to oil and humid workshop environment ✅ Clear size marking on part for fast matching during operation, efficient for repair work ✅ Complete 28-piece kit, easy to use for home maintenance and auto repair shops, saving maintenance time greatly.