The park tool sg 6 threadless saw guide ensures a straight clean cut on 1 254mm 1 18 286mm and 1 14 3175 threadless fork steerer tubes also works great when cutting handlebars or other round tubes from 22mm to 33mm simply clamp the sg 6 onto the tube and cut letting the sg 6 guide the hacksaw blade the sg 6rsquos non scratching composite body incorporates steel threads and a steel reinforcing plate to withstand the rigors of heavy shop use park tool sg 6 thre