DO NOT use this company ! I wanted some non slip strips to put on existing decking. The information both from a phone call to the company and from their website stated that the strips can be installed using just a screwdriver !! So I ordered the strips, they arrived - no pre-drilled holes. I called they apologized and said they had sent me the wrong item but no correct item was available so would I like a discount or return and refund. They reneged on either and told me it was perfectly possible to install and countersink the screws into the fibre glass strips with a screw driver............... the long and the short of it is that I had to pay someone with a decent drill bit and countersink bit to install these strips. Through the many phone calls the person I spoke to was rude and uninformed. I challenge any of them at edecks to install these strips with just a screw driver !! Unpleasant, no customer service and no integrity ! BEWARE of this company