Cooling Block for Micro Swiss All-Metal Hotend KTM 450SX The round USB holes are

The round USB holes are 30

Note: Fits ALL 2017+ 6

1985-1992 Ford F-350 XLT Lariat 2009-2010 Ford F-350 Super Duty Cabela's 2008-2009 Ford F-350 Super Duty FX4 2004-2010 Ford F-350 Super Duty Harley-Davidson Edition 2003-2015 Ford F-350 Super Duty King Ranch 1999-2015 Ford F-350 Super Duty Lariat 2013-2015 Ford F-350 Super Duty Platinum 1999-2015 Ford F-350 Super Duty XL 1999-2015 Ford F-350 Super Duty XLT 1967-1972 GMC C15/C1500 Pickup Base 1967-1972 GMC C15/C1500 Suburban Base 1967-1972 GMC C25/C2500 Pickup Base 1975-1978 GMC G35 Magnavan 1975-1978 GMC G35 Rally 1975-1978 GMC G35 Rally Camper Special 1975-1978 GMC G35 Rally STX 1975-1978 GMC G35 Vandura 1975-1978 GMC G35 Vandura Special 1974 GMC G35/G3500 Van Base 1973-1974 GMC G35/G3500 Van Rally 1973-1974 GMC G35/G3500 Van Vandura 1979-1991 GMC G3500 Magnavan 1979-1991 GMC G3500 Rally

Filter base with integral mounting

Color-Black

Cooling Block for Micro Swiss All-Metal Hotend KTM 450SX The round USB holes areMicro Swiss All metal Hotend Cooling Block Replacement Cooling Block Heat Sink for Micro Swiss All Metal hotend kits for CR 10 Ender Printers. Made in USA by Micro Swiss Compatibility Micro Swiss hotend for CR 10 Ender Kit CR 10s Pro with Micro Swiss All Metal Hotend Kit CR 10 Max with Micro Swiss All Metal Hotend Kit