For me personally, but it is the strengthened Phillips screwdriver hit. The screw head is 4.8 mm thick, behind it is a double-T-beam structure which is very massive. Must they also, because if you have the handles work properly you apply a gun-like Screwdriver with 10cm 90 ° -Winkelantrieb and the way the whole body weight to press. This gives torque !!!
Conclusion: quality, built to last, the relatively high price into perspective for each of the times had to work with counterfeit products from the hardware store.