Get 20% off any bezel with the purchase of a watch case! Use discount code BEZELBUNDLE during checkout. If you haven't noticed, we love our aviation watches here at namokiMODS. The NMK918 Pilot Case Bundle: Polished Finish is our take on a vintage Pilot styled watch, complete with an oversized onion crown (designed such that a pilot wearing gloves could adjust it). With a modern 40mm case diameter and compatibility with SRPE crystals and chapter rings, we can't wait to see some Pilot watch builds taking off. Case Bundle includes:1) Pilot Bezel2) Onion Crown This case is compatible with all SRPE crystals (NMK351/NMK352), SRPE chapter rings, SKX007 screw-down crowns and will fit our standard SKX Casebacks Case Specifications:Diameter: 40mmLug to Lug: 48mmThickness: 11.2mm (with caseback)Lug Width: 20mmWater Resistance: 100m Each case comes in a set inclusive of:- 2 x 20mm Spring Bars- 2 x Crystal Gaskets (Black and White 1pcs each)- 1 x Caseback Gasket