Lortone Model 45C Rotary Tumbler Great For Tumbling Rocks. This is a new Lortone model 45C rotary tumbler. It runs on 115V, 60Hz. This model 45C Lortone rotary tumbler is quite simple to operate and gives excellent finish to your stones. It includes a molded rubber barrel with a quick seal closure. The barrel interior measures approximately 5 3/4" diameter x 3 3/8" deep (46 x 86 mm).