KATO HO SCALE HM1 93" LONG BY 40" WIDE R670mm (26 3/8" radius). BASIC TRACK OVAL MASTER STARTER SET WITH POWER PACK... PRODUCT INFORMATION: Master (M) sets are complete entry level track packs and include a power pack along with simple track oval. These boxed track sets will be sold in Japanese style packaging. The HM1 includes US-style power packs and turnouts, making it a great way to supplement individual track pieces when building layouts. FEATURES: R670mm (26 3/8" radius), Basic Master Track Oval Set with Power Pack