I'll pass. I bought their '
17-4 Stainless Presta Head' to repair an older, different brand pump, and was taken aback to discover this simple-to-make, $36 part had not been
deburred! As delivered to the customer, every machine-cut edge is sharp to the touch. Rather than a part made "
using mono-crystaline diamond tooling to get the perfect surface finish, while the final feel of the part benefits from an investigation into more than 20 different styles and depths of knurl so that it will feel 'just-so' in your hands as it provides a lifetime of useful enjoyment", it was the kind of cut-corner workmanship I would have expected out of China fifteen years ago.
As I will, also, ever having $450.00 for a pump won't happen and there are a lot of things I would use that sum for besides this kind of thing. I should have used a smilie, I suppose, my reply was intended as humorous. My apologies if that offends anyone.
Bill