6. Shuttle HMF – XXX – X – X – XX – XX – X X – X – X – X – X – X – X – 2 - X (ex. HMF – 105 – X – H – 10 – 25 – H H – I – C – C – X – A – X – 2 - X) Old Style Fluted Spool (“N”) High Flow Flow (“H”) 10/29/2015 New Style High Dampened (“D”) 10