Bosch Custom Case 44 Piece 1 4 in Impact Driver Bit Set Ventilation Gable Vents Louvers and inlet and outlet full and inlet and outlet full port resilient seated shut off valves jewelry cases Impact Tough™ bit design – provides 10X life over standard impact bits Xtended Torsion Zone – helps to absorb high torque of new impact drivers Tilt in tilt out case mechanism – allows easier access to bits Customized storage configuration – provides efficiency so the right bit is always at hand Precision engineered bit tips – deliver a tighter fit and less cam out Heat treated bit manufacturing – provides stronger bit High visibility bit sleeve – makes finding the correct bit for the job easier Durable case – features a secure case latch and rubber bumpers