Their dimension of the belly only are as follows:
1.length is 2 3/8"(60mm), width: 1 1/16" (27mm), highness: 3/4"(21mm)
2.length: 2 3/16"(56mm) width:7/8"(23mm) highness:13/16"(20mm)
3.length:1 5/8"(42mm) width:13/16" (20mm) highness:3/4"(20mm)
4.length: 1 1/2"(38mm) width:3/4"(19mm) highness: 5/8"(17mm)
5.length: 1 1/4"(32mm) width:11/16"(18mm) highness: 9/16"(14mm)