Optimaxx C488 Extreme Performance Wood Screws with Torx Head. 

Optimaxx is a top quality, high performance wood screw that incorporates several unique features including.
A specifically positioned long thin groove dramatically reduces the pressure build up on insertion by dispensing wood fibres, preventing splitting when screwing close to the edge.
A sharp saw-tooth formation cut out of the bottom threads bite into the timber reducing torque and resistance, enabling fast penetration without a pilot hole.

Features and Benefits:
Razor sharp tip for an immediate start.
Saw-tooth bottom thread for fast and easy penetration.
24 slot countersink for full and easy countersinking.
Double reinforced collar for improved head strength.
Deep Torx seating which significantly reduces the possibility of 'cam out' of the torx driver bit.
50mm screws and shorter have a FULL THREAD.
60mm and longer have a PART THREAD.
Technical Specification:
Torx Head
Yellow  Supalube Finish
C1022 according to EN10263
Conformity - EN 14592:2008+A1:2012

PLEASE NOTE : THERE ARE NO DRIVER BITS INCLUDED WITH THESE BOXES. 
ANY MARKINGS ON A BOX (IN ALL IMAGES) IS ONLY TO HELP IDENTIFY THE CORRECT SIZE OF TORX BIT NEEDED TO DRIVE THE SCREWS AND IS NOT REPRESENTATIVE OF A DRIVER BIT BEING SUPPLIED. 

These premium grade Optimaxx Wood Screws are always available in-store.