When i was shopping ,i think i bought 1 or 2 at the lumber store ,hard to not buy off ebay though ,can get 2-3 tools for price of 1 local ,the bostich siding coiler i got used ebay ,i sided my house with it cedar shingle and hardiboard ,think it shoots 3/4 up to 2 1/4 inch nails , i have 1 3/4 in there most of the time ,works good for building fences and putting exterior trim on houses also ,The hitachi coiler i have is strictly for 3 tab roofing shingles ,the nails do not work so well for siding .