The utility model discloses a be applied to fixed component of glass substrate installation, it includes: first rectangular shape hole has been offered to a relative at least diagonal angle sign indicating number spare that sets up on an alar part fixed connection basic unit wall body of this angle sign indicating number spare, another alar part, an at least U -shaped connecting piece corresponds on the hem at its both ends and has seted up the rectangular shape hole of second, the rectangular shape hole of this second set up the first rectangular shape hole of direction perpendicular to, first fastener passes first rectangular shape hole and rectangular shape jogged joint angle sign indicating number spare of second and U -shaped connecting piece, this U -shaped connecting piece of glass fixed connection. The utility model discloses accumulative error in the time of can overcoming the installation to greatly shortening the change time limit for a project, reducing the consumptive material, and do not need the professional to operate, popular construction improves construction speed, does benefit to standardized operation.