Specifications:
Material: Resin
Product size: 4.5 * 2.5 * 1cm / 1.8 * 1 * 0.4in
Package size: 19.5 * 13 * 1.5cm / 7.7 * 5.1 * 0.6in
Package weight: 22g / 0.8oz

Unit Type:piece
Package Weight:0.028kg (0.06lb.)
Package Size:20cm x 13cm x 2cm (7.87in x 5.12in x 0.79in)
Package List:1 * Rosin

Feature:

Small in size, stored in a mini box for ease of use and transport.
Applied to bow hair to increase friction.
Grip the hair and make them speak, or vibrate clearly, better performance.

Note:The shade of rosin's color varies with seasons.