36hRHD or LHD9t driverthree pawls with individual springs48 points of engagement6903 hub bearings (2x)6802 driver bearings (2x)6809 outer driver support bearing- - - - -the ZCoaster's pawls are "Z" shaped to allow for engagement/disengagement by the center Slack-Cam Ring. This also allows for adjustable slack. forward engagement drives the hub, while backwards engagement releases the driver from shell for some freecoastin’ sexy time!removing the flat spring spacer and replacing it with the cassette conversion spacer (included with hub) will allow for normal cassette use. the hub will not function as a freecoaster if the cassette conversion spacer is installed- - - - -CROMO (cromoly) female axle accept 3/8" x 16 tpi bolts with the following options:a) cromo Socket bolts with polished AL Volcano washers *b) titanium Socket bolts with polished AL Volcano washers - add $35 *c) cromo Button bolts (full 3/8" or 3/8" with integrated 14mm adapter)d) cromo Button PEG bolts (3/8" with integrated 10mm long 14mm adapter for peg / dropout)e) titanium Button bolts (full 3/8" or 3/8" with integrated 14mm adapter) - add $35f) cromo Hex bolts (full 3/8" or 3/8" with integrated 14mm adapter)g) cromo Hex PEG bolts (3/8" with integrated 10mm long 14mm adapter for peg / dropout)- bolt chart available as you click through product images- all bolts accept 8mm Allen key - “Hex” bolts also accept 17mm wrench or socket- anodized black or polished hub cone spacers* Volcano washers, we’ll match cone spacers color(s) unless otherwise noted in “order comments”- please include any instructions in the “order comments” if you want an axle / bolt configuration not listed in the choices above (example: one Hex bolt and one Hex PEG bolt on a hub, etc.)- - - - -14mm GDH male axle options:heat-treated cromo with alloy or cromo axle nutstitanium with alloy or cromo axle nuts- - - - -driver options:cromo 1-pc driver: 9t cromotitanium 1-pc driver 9t- - - - -Slack-Cam Ring options:20º / 33º / 45º (45º = 1/8 of a crank)60º (1/6 of a crank)75º (1/5 of a crank)90º (1/4 of a crank)115º (1/3 of a crank)