Package content: 4PCS round speaker junction boxes to meet your needs. | Product size: panel diameter 2.2in, mounting hole diameter 1.9in, thickness 0.8in. | Application range: suitable for 2.1 small speakers, surrounding boxes, center boxes, small bookshelf boxes and other small speakers. | The junction box is often installed on the back of the speaker shell as a connection box between the power amplifier and the speaker, with a two-digit one positive and one negative clamp. | Loudspeaker terminal box, terminal block, terminal clamp, terminal post, the box behind the box shell to connect the power amplifier line.

Multifunction: International standard universal camera 3/8 screw is suitable for any SLR camera tripod, monopod, telescope, lens board, lamp holder, etc. That is, it has a 3/8-inch hole. | High quality: This camera screw adapter is made of sturdy aluminum alloy, which is sturdy and durable. This is definitely a powerful tool that allows your photography equipment to be better used. | Easy to use: precision manufactured 3/8 to 3/8 (male to male) metal tripod screws, international standards. Help you get more possibilities and freedom of installation and combination in photo shooting. | Easy to carry: Light weight and small size, easy to carry, easy to replace the camera screw, widely used to bind two photographic equipment together. | Package content: 2 camera tripod adapter screws, model 3/8in male to 3/8in male

Material: shell: ABS, durable; wool: wool, soft and comfortable. | Specification: when the wool is indented, the size is 9 * 2.8 * 1.8cm, and the wool length is 3cm. | The wool brush head is retractable and easy to use, which can effectively protect the brush head and extend its service life. | 9 cm long, moderate size, easy to clean all kinds of instruments. | Purpose: camera, computer, mobile phone, lens, binocular, negative, slide, audio, CD, etc.