The domed banjo bolts are attractive to look at and easy to tighten with an allan key. However there is a small issue with the bleed nipple versions. Due to the allan key socket occupying so much of the domed head the bleed nipple only engages by one and a half turns in the thread so it is very easy to strip when tightening. I modified mine by drilling the nipple seat a bit deeper to get 3 turns of engagement but this is an issue that should be sorted out by the manufacturer not the purchaser. All the other Venhill parts I've purchased are excellent.