This is the replacement Receiver Without Crystal for the Heli-Max AXE CP Micro EP Heli. FEATURES: 6 Channel FM Receiver on 72MHz Replaces a worn or damaged receiver INCLUDES: One Receiver with Antenna Wire REQUIRES: Installation SPECS: Length: 1.44" (36.5mm) Width: .77" (19.5mm) Thickness: .45" (11.5mm) COMMENTS: For the E-board HMXM2003 kpm01/10/2007 ir/jxs BOX DIMENSIONS: 4.00" W. X .50" H. X 6.00" L. BOX WEIGHT: .03 LBS.