Birzman’s Infinite exudes quality, and while the figures don’t look great (45psi at 150 strokes, with a stroke length of 14cm) it doesn’t give up the ghost at 150 strokes, though by 200 it’s very warm.
It has a CNC-machined barrel, a wide shaft, and an impressive metal hose. This lives in the handle when not in use, secured by a rubber housing, and has a quick-to-attach chuck that works with Presta and Schrader valves. It screws onto Presta valves quickly and securely, and combined with the smooth pumping action results in a decent performance.
The hose is threaded for CO2 cartridges for super-quick inflation, and there’s a carrier and strap for the pump and a pair of CO2 canisters. A good quality mini pump.