This is the Great Planes Giant Adjustable Engine Mount. This Engine Mount adjusts to fit a variety of engine sizes from a 1.08 two stroke up to a 1.80 four stroke. FEATURES: Made of strong reinforced nylon. Adjustable to fit 1.08-1.80 cu in (17.5-29.5cc) two stroke engines or 1.20-1.80 cu in (19.5-29.5cc) four stroke engines. Symmetrical bolt pattern allows mount to rotated without requiring new firewall holes to be drilled. INCLUDES: One Great Planes Giant Adjustable Mount with: two nylon sections, Four 10-32 x 1-1/4" socket head cap screws, four #10 lockwashers, four #10 flat washers, and instruction sheet with drill template. SPECS: Overall length: 5.04" (128mm) Usable beam length: 4.5" (114mm) Mounting width: Min: 2.4" (60mm) Max: 2.9" (75mm) Firewall bolt pattern: 1.95" x 1.95" (49.5 x 49.5mm) Weight: 193g (6.88oz) REQUIRES: Mounting to firewall and attaching engine to mount. Drilling holes to mount landing gear COMMENTS: This mount hole pattern does not work with the old MM60 mount. JXS 12/07/01 ir/kh updt jxs 2/17/04 updt jxs 6/28/04