Application:Universal Spax-exclusive Yellox surface: increased corrosion protection and more environmentally friendly than the usual yellow zinc plating due to lack of chrome (VI) As a multi head pronounced countersunk for flush penetration and comfortable processing, milled in wood, brakes on metal. Optimum power transmission and clean fit with Phillips blade size Z2 Effortless work; and longer battery life: no pre-drilling (depending on the wood). Easy penetration, reduction of the gap effect by 4CUT: Four edges in the screw tip. Easier cutting of the wood fibre thanks to Spax wave profile Made in Germany - approved for use in the building inspection: European Technical Approval for screws as a wood connecting medium in carrying wood constructions (ETA-12/0114), Weight: 2.6675933702 pounds, Manufacturer: Spax