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HDUD - 1, - 2, -3, -4  Heavy Duty Precision Universal      
                                                              by MACK

This is a super Heavy Duty Precision Universal, double jointed, that comes with a 3/16" bore on both ends
(HDUD-1),  OR  with a 5 mm bore on one end and a 3/16" diameter bore on the other end (HDUD-2). 
Excellent when used with any 700 size motor, or motors with 5 mm output shafts.  Use it with MACK's new Maurauder Race Motor. 

Size:  0.5" diameter x 2.5" long      Weight:  1 oz.

HDUD-1
-- 3/16" to 3/16"
HDUD-2 -- 5 mm to 3/16" 
HDUD-3 -- 3/16" to 1/4"
HDUD-4 --
1/4" to 1/4"

Price:  $29.50 each