ProTaper ATAC Stem - 50mm 31.8mm Clamp +/-5 1 1/8" Aluminum Black/White MFPN=00.4020.559.000 }Park Tool BTS-1 English Bottom

}Park Tool BTS-1 English Bottom Bracket Taps Facer and Handle Set

Safe and simple spring loaded fixed position arms do not contact the frame or fork

Laterally adjustable non-slip TriVider strap system

Color Black Wheel Size 29" Wheel Size 700c Wheel Size 27

8 Drop Bend Style Compact Cable Routing External Material Aluminum Width Measurement Center Width 40 Defined Color Black Clip-on Compatible No

ProTaper ATAC Stem - 50mm 31.8mm Clamp +/-5 1 1/8" Aluminum Black/White MFPN=00.4020.559.000 }Park Tool BTS-1 English BottomProTaper ATAC Stem 50mm 31. 8mm clamp Black White. The ATAC is back. One of the oldest names in the high end stem game has returned. And this time its all blinged out with titanium hardware and a fresh laser etched finish. Aluminum construction with Titanium Hardware Rise: + 5 degrees Clamp Diameter: 31. 8mm TECH SPECS Bar Clamp Diameter (mm) 31. 8 Color Black White Defined Color Black Length 50 Material Aluminum S. H. I. S. Stem Clamp Diameter 28. 6