Model JQ014 4-digits push counter is used to record the quantity, it is widely used in station, works, school, airport, store, garden ect. Other description: Max. calculation capacity: 9999 Transmission ratio: 1:1 Counting speed: < 300 times/minute Torque: ≤4.18 Ncm weight: 32g this model has follows items: 1). JQ014A----- steel cover with electroplated 2). JQ014A-B--- steel cover with electroplated, with base 3). JQ014A-C--- stainless steel cover, without base 4). JQ014------ plastic cover (all colours)