This is a Fourteen RM-BLADE (muscle back) iron. I've been using it for about a year. The "RM-BLADE," a blade iron that refines the "RM-B," is now available in a limited edition with two finishes: champagne gold and matte black. ■ Champagne Gold Finish It has a low plating hardness, a soft feel that makes it easy to feel the impact, and the pale gold color gives the impression of enveloping the ball. Head: S20C (integrated forging) Finish: ① Champagne Gold Back Face: CNC milled Club Numbers: #4, #5 - P (7 clubs) Sockets and tungsten granules for weight adjustment are included. ■ Manufacturer: FOURTEEN ■ Model: RM-BLADE Champagne Gold ■ Type: Iron Set ■ Dexterity: Right-handed ■ Balance: D-1 ■ Number of Clubs: 6 ■ Set Contents: 5-9 P ■ Shaft: KBS TOUR 120 ■ Flex: S *Shipping to Hokkaido and Okinawa will be cash on delivery.