OTTER
use code "OTTER" for free Delivery
Class 4 corrosion resistance for superior durability
6.2-11 x 65mm hex-head screws with 11 TPI thread
Suitable for timber and metal applications
Wallaby (Colorbond compatible) finish
Washer pre-fitted to screw for easy installation and reliable weather sealing
500 screws per tub –


Are these standard size for normal metal roof?