Our shelf mounted tube holder is designed to keep 16x caulking, silicone, adhesive tubes or  safe, secure and organised. 'Dual Row' design ensures contents remain secure when mounted inside your work van. Designed primarily for use on van shelving, its equally useful in workshop or factory. Additional holes for spare cartridge nozzles. 100% waterproof makes our products ideal for the valeting and detailing profession. No outer coating to damage ensure the holder remains waterproof throughout its lifetime. 4x 5mm fixing holes on the underside allow the holder to be securely fixed into place (fitting not included). Manufactured in the UK using 4.5mm thick engineering PVC ensures our holders are tough, flexible and lightweight. Added benefit of being resistant to most chemicals. Measuring W2.