Step two, find a suitable stainless steel reflector tube to fit the lights in. An ideal 4" id ready polished tube was found on a visit to my local DIY store. Two s/steel lavatory brush sets were purchased for £12. As they came with 4" id polished s/steel tubes for placing said lavatory brush into, they were ideal and much cheaper than purchasing the steel from a local stockist, that is if they were to have the right s/steel tube in stock anyway.