"Unfortunately the grove to insert the flat screw driver was turned round and it took a little while to sus it out. Everything you needed to fix it was in the packet. Excellent value for money, I just hope that I find another use for the other 4."
"Didn't shop about Screwfix usually the cheapest, fitted two with ease, so far so good. Adjustable via roller wheel, face plate shows direction to rotate to adjust, put screwdriver in slot in wheel push in and turn, what could be easier. Can't comment on build quality as only just fitted, time will tell but appear to be ok, hence some 3 star ratings."
"These roller catches are about as poor quality as you can expect. Two out of five have broken on trying to adjust them and another has come all tarnished and deformed. Terrible! Don't buy these. Should have known at that price!"
"Bought a packet of these today. Although the adjustment markings are obvious, I cannot get them to adjust at all - they simply will not turn in the housing. The default setting has the roller too proud to use."