此模型用于将板材同2020铝型材进行连接，板材厚度可自由选择，每个面需使用4对本连接件。

A1 mini也可在同一盘打印4对模型。

每对连接件所需五金配件：

3个 T型螺母 20型M4

3个 六角螺母 M4

3个 螺丝 M4*6

3个 螺丝 M4*（最少板材厚度+6mm）

This model is used to connect the sheet metal with 2020 aluminum profiles, and the thickness of the sheet metal can be freely selected. Each surface needs to use 4 pairs of this connector.
A1 mini can also print 4 pairs of models on the same disc.
Hardware accessories required for each pair of connectors:
3 T-nut 20 type M4
3 hexagonal nuts M4
3 screws M4 * 6
3 screws M4 * (minimum plate thickness+6mm)