Quick view Add to Cart Treatment of the Rear Cone Before Installation of the Propeller, Ref 526 Document Part Number: No. 115 Number of pages: 4Part Number: No. 115Revision Date: 23-Dec-1946Description: Ref 527 - Aluminum Barrel Supports on Model 33D50 Propellers, Ref 528 - Heavy Counterweight Caps on Beech Twin Engine... MSRP: Was: Now: $15.00