Got the orange blades for better visibility....
Initially I installed the KBDD's WITH the shims that came with the stock blades, but the fit was VERY tight....so I removed the shims and was able to adjust tension so the blades were "fixed" in the grips, but not "locked"!
BTW....I ordered TWO sets....always good to have spares!!
The pink main/tail blades for my mCPx are still going strong....GREAT PRODUCT!!
KBDD Tail Blades for 450X Submitted by Dale on 3/31/12