The just ultra soft dslr swabs are a pack of 10 17mm swabs that have been clean room manufactured using extremely soft and highly absorbent lint free micro fibre cloth to produce a superior cleaning action the 17mm swab width is suitable for the canon d30 d60 10d 20d 30d 40d 300d 350d 400d 450d and 1000d the nikon d100 d1x d70 d80 d40 d40x d50 d60 and d90 pentax samsung and sony