expression, godan verb (-ku)
be able to reach; be within reach; be affordable
Literally 'one's hand reaches'; used for physical reach, accessibility, or financial affordability. Often used with ～に or ～まで.
棚の上の本に手が届かない。
I can't reach the book on the shelf.
この値段なら私
I can afford it at this price.
expression, godan verb (-ku)
be near (a certain age)
Used with age expressions like ～歳に手が届く to mean approaching that age. Often implies the age is within sight or almost reached.
彼ももうすぐ40歳に手が届く。
He will soon be approaching 40.